Multiple US Mil beechcraft, call signs: INTEL I tend to see at least one of these guys doing orbits over this area practically every day, throughout the day. They always stay within a few miles of Fort Huachuca, and stay up for hours at a time At times I have seen as many as 5 of them in the air at the same time, all with callsigns INTEL## best guess, assisting Border Patrol?
these guys are typically assigned to Federal Departments also contracted from the DoD. so yes, DHS/CBP Duties most likely in assisting local LE or Federal Agents.